Internet Download Manager (IDM) is a closed source software download manager only available for the Microsoft Windows operating system. It can be downloaded for a free 30-day trial, or be purchased for a one-off payment for continual use. IDM allows users to automatically download certain file types, divides downloads into multiple streams for faster downloading and lists recent downloads for easy access to files. Its algorithm includes dynamic segmentation throughout the downloading process, which sets it apart from many other download managers. IDM contains no ads or spyware, and works with Internet Explorer, Opera, Netscape Navigator, Mozilla, and Mozilla Firefox.